CVE-2026-42952

Hydro-Québec Le Circuit Electrique charging station backend Improper Restriction of Excessive Authentication Attempts

Published Jul 10, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Description
Previously, there was no throttling on repeated authentication attempts
to the charging station backend, which could allow an attacker to
execute a denial-of-service attack.

Remediation

Vendor Solution

Hydro-Québec has updated the majority of charging stations to disable OCPP, mitigating the risk of exploitation. Hydro-Québec has also implemented authentication systems to mitigate the issue for certain charging stations which are still reliant on OCPP. Contact Hydro-Québec with any additional questions.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Hydro-québec
Hydro-québec le Circuit Electrique Charging Station Backend
Vendors & Products Hydro-québec
Hydro-québec le Circuit Electrique Charging Station Backend
Type Values Removed Values Added
Description Previously, there was no throttling on repeated authentication attempts to the charging station backend, which could allow an attacker to execute a denial-of-service attack.
Title Hydro-Québec Le Circuit Electrique charging station backend Improper Restriction of Excessive Authentication Attempts
Weaknesses CWE-307
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Jul 14, 2026, 2:34 PM
Reserved
May 7, 2026, 4:55 PM
Status
Deferred
Published
Jul 10, 2026, 11:16 PM
Modified
Oct 25, 2026, 3:10 PM